Grain-separator



(N0 Model.) 2 Sheets-Sheet 1.

J. P. HMFIELDl GRAIN SEPARATOR.

No. 257,824. Patented May 2,1882.

l A Il a? 4 UL ATTORNEYS N4 PETERS. PholLilbographer. Washington. 4 CA (No Model.)

4 2 Sheets-Sheet 2.

J. P. HATFIELD.

GRAIN SEPARATOR.

Patented May 2,1882.

\ ATTORNEYS UNITED STATES PATENT GEEICE.

JAMES F. HATFIELD, OF DUBLIN, INDIANA.

GRAIN-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 257,324, dated May 2, 18.82. Application tiled February 7,1882. (No model.)

i and to letters or figures of reference marked thereon, which form a part of this specification. Figure l represents a vertical sectional view of my grain-separator, the screens being removed. Fig. 2 represents a cross-sectional view of the same. Fig. 3 represents an -end view, and Figs. 4 and 5 are detail views.

This invention has relation to grain-separators; and it consists in t-he novel construction and arrangement of parts hereinafter fully described, and particularly pointed out inl the claims.

In the accompanying drawings, the letter A designates the frame of the machine, having the uprightsupports B and side walls D. These side walls D are made with extensions E beyond the fan-case, forming the side walls of a sieve-box, F, designed for storing extra sieves not in use. This box is so arranged that it does not in any manner interfere with the running of the machine.

Gr indicates the rocking and endwise-shaking screen-box, constructed with a bottom having lateral inclined boards a, extending to the central bottom board, b, which is provided with perforations c. Each perforation c is made in the bottom of a separate receivingcompartment', el, formed between the screen-supporting partitions e, transversely arranged in the screenbox. A screen (not shown) feeds each compartment, and the several screens should be of different mesh.

To the bottom of the screen-box, on the center board b, are slide moldings or ways g, which receive the edges of the slide h, having perforations c', which are placed at the proper distance apart to register with the perforations c of the center board. The slide is designed to have endwise motion, and can be adjusted to close the perforationsc, holding the grainin the compartments, or to open said perforations wholly or partially. After the separation each kind ofgrain falls into its special compartment, and can be kept there until a proper receiverl is placed under the screen-box. The compart. ments save the small grass-seed and gardenseed, so that they are not discharged on the ground to become mixed with each other or with` extraneous matter, requiring to be run through the mill a second time.

H H indicate transverse rods, located one at each end of the screen-box, and bolted to the sides of the frame by means of threaded arms lo la, passed up through the beams 'n' of the same near each end thereof, and nuts n, so that the rods can be adjusted to give more or less pitch to the shoe. The rods H are each provided with a bearinglug, l, which extends through a boxing, p, in the end of the screen box or shoe G. When the main driving-wheel of the mill is turned the shoe G is caused to vibrate from side to side by means of common connecting geara rod and arm, as indicated at a/ and in this movement the lugs Z serve as the center bearings, and have sufcient length to allow some endwise motion to the shoe. v -At the sides of the boxing p are secured to the lower end of the shoe inclined planesss, one of which has an upward slope, while the other inclines downward, so that as the screen-shoe is vibrated it will be caused to move toward and away from the transverse rods in an endwise movement designed to cause the screens to shed the grain and deposit it in the compartments at the bottom of the shoe. At the upper end of the screen-shoe similar inclined planes, s s', are located, each being reversed in position with respect to the inclined plane s at the opposite end and on the same side of the shoe. agitates the gra-in and keeps it from sticking inthe screen-wires. The endwise movement is also a jarring movement, and is especially effective in shedding the grain from the screens.

K represents the chaff-shoe, located above the upper portion of the screenshoe. The upper end of the chaff-shoe is provided with a fork-bearing, L, which engages a crank, N, of the crankshaft P, carrying a pulley, b', for an operating-belt, e', which may extend from a pulley, d', on the shaft of the fa-n R. At: its lower The rocking movement of the shoe end the chaff-shoe rests on lateral eccentrically-curved bearing-blocks T, which are pivoted to the sides of the frame. These blocks are adjustable on their securing pivots or screws, so that they may be turned either up or down thereon to give more or less pitch to the chaffshoe. As the crank-shaft revolves in the forkbearingLitgives a quick circular up-and-down motion to theupper end ofthe chaff-shoe, when the chaff falls on it, which is very effective in loosening the chaff and causing the screen to shed it freely. The movement is designed to be especially important in removing gravel from chaff.

The chaff-slice, it will be observed, is detachably attached to its bearings, so that it can be removed in a moments time by simply lifting its forked bearing clear of the crank-shaft on which it rests.

V represents the hopper, having side walls g fitting the side walls of the main case at each side of the chaffshoe. rEhe hopper is arranged over the chaff-shoe, and is constructed with transverse inclined Walls h and a center bearing or board, le', transversely arranged,and provided with a series of perforations, m, eX- tending across the hopper-bottom, as indicated in the drawings.

InV suitable ways, w, a slide, S, having a series 0f perforations, m', is arranged over the center board lo', so that the perforations of the slide may be caused to register with those of the board or to Wholly or partially cover the same. The object of this construction is to provide a regular and uniform feed across the chaff-shoe. The slide S is designed to beadjustable from either side of the mill, and is provided with graduating marks or scales .e at

each end, to enable the operator to regulate the feed by adjusting the slide according to the number of bushels per hour required up to the full capacity of the mill. The perforations cause an even feed across the chaff-shoe and render spreading boards or plates for said chaffshoe unnecessary-an important advantage, as such spreading boards are obstructions which interfere with the Windfrom the fan on its Way to the chaff-screens. The transverse bearing-rods E H, against which the inclined planes of the screen-shoe Work, form strong braces for the'ends of the main ease, adding materially to its firmness and durability.

Having described this invention, what I claim, and desire to secure by Letters Patent, is-

l. The screen-shoe having the sloping sides a., the perforated center board, b, and the partitions between said perforations@,formng compartments d, in combination with the perforated slidc and cnt-off h, substantially as specified.

2. The screen-box G, provided with the reversely-arranged inclined planes-s s anda bearing-hemp, at each end, in combination with theadjustablebracing-rods H H, provided-With bearing lugs or centers Zand common gearing and connect-ions, whereby an endwise anda vibratory motion is imparted to the screenbox during its operation, as specified.

In testimony whereof -I afiix my signature in presenceof two Witnesses.

JAMES F. HATFIELD. Witnesses:

WILLIAM E. 00X, THOMAS P. J EssUP. 

